Shedding mechanism for looms.



No. 650,280. Patented May 22, I900.

H. sTAuBu. SHEDDING MECHANISM FOR LUOMS.

(Application filed Oct. 15, 1896.) (No Model.) 2 Sheet yz'irzaxmf: flw/afar: WM Erma SW16,

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No. 650,280. Patented May 22, 1900. H. STAUBLI.

SHEDDING MEGHANISM- FORL-OOMS.

(Application filed Opt. 15, 1896.)

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IUNITED STATES PATENT OFFICE.

HERMANN STAUBLI, or HORGEN, SWITZERLAND.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 650,280, dated May 22,1900. Application filed October 15, 1896. Serial lilo. 608,995- (Nomodeld T [6 whom, it may concern.-

Be it known that I, HERMANN S'rliUBLI, a citizen of the Republic ofSwitzerland, and a resident of I-lorgen, in the Republic of Switzerland,have invented certain new and useful Improvements in Shedding Mechanismsfor Looms, (for which I have obtained Letters Patentin Switzerland,dated July 3, 1896, No. 12,154; in Germany, dated July 23, 1896, No.92,948; in France, dated July 20, 1896, No. 258,222; in Austria, datedOctober 26, 1896, No. 46/4,292; in Hungary, dated September 30, 1896,No. 7,210; in Spain, dated August 22, 1896, No. 19,550; in Italy, datedSeptember 30, 1896, No. 42,361; in Belgium, dated August 17, 1896, No;123,056, and in England,dated September2, 1896, No. 19,355,)

of which the following is a specification.

My invention relates to shedding mechanism, and particularly to thatclass of shedding mechanism actuated by lag-chains and known as dobbymechanisms, and has for its object an arrangement of parts whereby thelag-cylinder can be driven from the weaving mechanism after each pickand will be equally elfect'ive if run in apositive or negativedirection, at the same time adapted for top, bottom, or center shedding,and gives, above all, a uniform distribution of power.

Referring to the accompanying drawings,. in which like letters andnumerals of reference indicate like parts, Figure 1 is a side elevationof my machine. Fig. 2 is a part plan View showing the indicator-levers,lag-cylinder, and driving mechanism. Fig. 3 shows the driving mechanismfor the lag-cylinder in side elevation. Fig. 4 shows the pawl and pinionfor the lag-cylinder gear, and Figs. 5 and 6 are details showing theindicator-levers.

In Fig. 1, a a are the main or harness levers, (rear part only shown,)which carry the heddles and are of usual form, their rear ends connectedto the customary jacks b. Ateither end of the jacks b are the hooks c 0,each guided in a suitable grid 00 m and engaging their respectivereciprocating griffs d at" when in their lowered position. The griifs orknives d (1, each guided by and reciprocating in slots in the frame ofthe machine, have perforations at either end to receive the hooked endsof the adjustable operating-rods. e and e.

opposite ends and held in suitable bearings by nuts (3*, which bothsec'ure the rod in po-- sition and admit of its longitudinal adjustment.The bearings for these rods are held at. two ends of the usualthree-armed oper= ating-lever f, comnion to machines of this class andhere driven independent from the mechanism for driving the lag=oylinder.

The lag-cylinder G and the operating-pile ion are journaled in adetachable bracket h, depending from the frame 2. The cylinder G,operated by a drivingear it, (here shown as having sixteen teeth,)carries the lagchains G, of any suitable form, Fig. 1, and receives itsintermittent motion through a pinion I, having one tooth,which may, ifdesired, be made integral with the sleeve of the bevel-gear i, whichdrives it. Gearing with with this bevel-wheel i is a second bevel gear91 on the end of a counter-shaft p, journaled in a yoke-shaped bracketq, also detachably secured to the frame of the machine. Thiscounter-shaft carries a sprocket-wheel h, driven by a chain it from theweaving mechanism.

A lever n, fulcrnmed at one end in the frame, carries the roller m,which serves as a pawl to look the wheel h in position after turningthrough one tooth to prevent any slip of the lag-cylinder due to unequalweight of the chains on either side, and at the opposite end of thelever 02 is a tension-spring 0, secured at its lower end to a bracket 0,depending from the frame .2 and detachable therefrom. The roller m islifted against the tension of the spring 0 and rolls over a tooth whenthe pinion Z forces the wheel it around the space of one tooth. Thislast-described mechanism for driving the lag-cylinder being rel lowerhooks 0, while the other is shorter and has a straight end, on whichrests the usual needle y, that lifts the upper hooks Both in the drivinggear 11 of the cylinder be changed to suit the requirementsof the loom.Having thus described my invention, what the forward and rear ends ofthese indicator- I claim as new therein, and desire to secure 5 leversare guided in grids a; andm and their by LettersPatent, is-

cam-faces are not, as is usual in such ma- Thecombination withthepattern-cylinder, chines, at the samedistance from their pivot-lmechanism controlled by the movements of points g, but are at difierentdistances therethe loom adapted to impart to said cylinder from, so thatthe pins or pegs-on the lags of av step by-Step rotation in unison withsaid 40 10 the lag-chain G will'lift one before the other. movements,the hooks and gritfs; of a pattern Consequently the knives or griii'smust recipor lag chain the lags of which are provided rocate relativelyto the lifting of the hooks. with pins or pegs and weighted indicator-In Figs. 5 and 6 I have shown the camlevers'actuated thereby, saidlevers arranged faces 1 2 of the indicator-levers so constructed iifpairsa'nd provided with cam-surfaces dis- :5 that they will fall aftertwo revolutions of placed relatively to each other a distance pinion l,prone-eighth of a revolutionot' the equal to the travel ofapatter-n-chain pindurlag-cylinder, and'the upper 'hooks'c will have ing a partial rotation of the pattern-cylinder, fallen on their grifi d,and said griff will be whereby the upper and lower hooks actuated onitsjreturmthrough its lost motion, the dis- I by a pair of levers aremoved successively in- 2o tanee3, while-the other griff is passing intostead of simultaneously, into and out of enposition to receive the lowerhooks when regagement with their griifs by successive parleased by theirtappet-levers. "tial rotations of the pattern cylinder, for the Theposition of the camsfaces enables more purpose set forth. uniformdistribution of power, and conse- In testimony whereof I hereunto signmy faces may be altered and the number of teeth quently more even anduniform running of the machine, and decreases the jarring to a greatextent, thus reducing the liability to over and under shedding while theloom is in l ope tion- It is obvious that the position of the camname,in the presence of two subscribing \vitnesses, this 19th day of August,1896.

Vitnesses:

I-I. LABBARD,

EMIL BLU

